74 BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



Relationship. — L. tunicatus is closely related to L. Tierschelinus. The 

 types of L. Tierschelinus are small and pressed out of shape, so that an 

 accurate description is impossible. The author has not compared 

 specimens of the same size of the two species, but it appears that in 

 L. tunicatus the gill slit extends farther down in front of the pectoral 

 fin and the number of pyloric coeca is greater than in L. herschelinus . 

 Description. — Description of several specimens from Labrador, 

 collected by L. M. Turner. 



Dorsal 41-44; anal 35-37; pectoral 35-37; pyloric coeca 38-48. 

 Depth 4-4.7, in length without caudal; head 3.6-3.8. Eye 5.3-6.3 in 

 the head; disk 2.2-2.4. 



Body robust, deepest at front of first dorsal. Head heavy and 

 broad; occiput slightly swollen; cheeks swollen; profile depressed over 

 eyes. Mouth broad, nearly terminal; maxillary reaching vertical from 

 pupil. Teeth short, stout, arranged in about 11 oblique rows in the 

 half of each jaw; the lateral lobes appearing nearly as prominent as the 



central lobe. Eye small. Gill slit ex- 

 tending down in front of three to six 

 pectoral rays in adults, in young speci- 

 mens apparently not extending as far 

 down in front of the pectoral fin. 

 Pricldes absent. 



Dorsal fin unnotched; the origin 

 over the end of the first third of 

 pectoral. Caudal slightly rounded, of 

 10 rays, connected for about one 

 ■p. , ,n T,„.„,= .„„. rr„^^„ quarter its length to the dorsal; dorsal 



Figure 10.— Lipaeis tunicatus. Teeth ^ ° _ _ ' 



FROM SPECIMEN No. 341G8, u.s.N.M. and anal connection with the caudal, 

 FROM LABRADOR gradual, the last rays not shortened and 



forming a notch. Pectoral fin notched; the lower lobe of seven rays, 

 reaching halfway between disk and vent or beyond. Disk rather 

 large, with a broad flap. Distance from disk to vent, 2.5 to 3.4 in head. 

 Color: The specimens examined exhibit two types of coloration: 

 (1) Represented by No. 34163, upper parts of head and body brown- 

 ish; a pair of pale stripes extending from tip of snout through nostrUs 

 and along top of head, uniting at the origin of the dorsal, then deflected 

 downward along the sides of the body to the base of the caudal; a 

 second extending backward from the snout below the eye and across 

 the gill slit, hence it is deflected downward on the sides to near the 

 base of the anal and then backward to the base of the caudal; peri- 

 toneum silvery, black dotted; outer half of vertical fin darker; (2) 

 body gvsiy, slaty brown; skin finely dusted with brown dots, paler 

 below; dorsal and anal with the base pale and the outer half dark 

 brown; caudal uniform brown or speckled and crossbarred with 

 brown; the base unusually pale; pectoral pale or speckled with brown. 



